The solubility of imperatorin in ethyl acetate, ethanol, methanol, n-hexane, and petroleum ether was measured at temperatures ranging from (278.2 to 318.2) K at atmospheric pressure. The solubility of imperatorin in the above solvents decreased in the order ethyl acetate > methanol > ethanol > n-hexane and petroleum ether. The solubility data were well correlated with a modified Apelblat equation.